\begin{enumerate}
	\item 
	\item 
	\begin{figure}[H]
		\center
		\includegraphics[width=320px]{images/exo_4_1.png}
		\caption{zfeefzzzzzzzzz}
	\end{figure} \
	
	\item 
	\begin{figure}[H]
		\center
		\includegraphics[width=320px]{images/exo_4_2.png}
		\caption{zfeeeee}
	\end{figure}
\end{enumerate}